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Chapter 13: Problem 57

Sodium ions in blood serum normally are 0.145 \(\mathrm{M} .\) How many grams of sodium ions are in 10.0 \(\mathrm{mL}\) of serum?

Short Answer

Expert verified
The mass of sodium ions in 10.0 mL of serum is approximately 0.03335 g

Step by step solution

01

Calculate the number of moles of Sodium

Firstly, convert the volume of the serum from mL to L to match the units of molarity which is in mol/L. 10 mL is equal to 0.01 L. Then, calculate the number of moles of sodium using the formula \( number\ of\ moles = Molarity \times Volume \). So, \( number\ of\ moles = 0.145 M \times 0.01 L = 0.00145 mol \)
02

Calculate the mass of Sodium

Using the molar mass of Sodium (Approximately 23 g/mol), the mass of Sodium in the serum can be calculated using the formula \( mass = number\ of\ moles \times molar\ mass \). So, \( mass = 0.00145 mol \times 23 g/mol = 0.03335 g \)

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